The super strange thing and my main point to the follow up is that after replacing the O2 sensors it took two days before the repair "took" even though I reset adaptations right away.

Believe me I was not thrilled to see my fuel trims maxed within 30-40 minutes of driving after replacing the parts that determine fuel consumption.

With wife's FPR apparently shot, and the indication of my car running lean I would not be surprised if I'm also having a weak FPR especially since when using my car as a control I noticed a pretty reliable dip in pressure at high throttle, even if just half that of wife's.

In wife's case the initial prime of the pump only gave me like 42-44 psi, a clear failure of the FPR as with engine not running there is no flow to lower psi from a week flow such as a kinked hose or plugged filter.

Wife has new exhaust and intake CPS but mine only has now five year old intake CPS no indication of failure on the exhaust one yet.

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2011 E70 • N55 (me)
2012 E70 • N63 (wife)